<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
	<style type="text/css">
		.div1{
			width:200px;
			height:200px;
			background-color: red;
		}	
	</style>
</head>
<body>
	<div class="div1" style="">你好</div>
</body>
</html>